An element with mass 290 grams decays by 13.2% per minute. how much of the
element is remaining after 14 minutes, to the nearest 10th of a gram?

40.0 grams

Step-by-step explanation:

An exponential decay function is

          .... (1)

where, a is initial value, t is time and r is decay rate.

It is given that element with mass 290 grams decays by 13.2% per minute.

Initial value = 290

Decay rate = 13.2% = 0.132

Substitute a=290 and r=0.132 in equation (1).

Substitute t=14 to find the amount of element remaining after 14 minutes.

Round the solution to the nearest tenth.

Therefore, element with mass 40.0 grams is remaining after 14 minutes.

answ9x x 3=

step-by-step explanation:

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer